Weather Radio User Manual

PRIMUS
r
880
Digital
W
eather
Radar
System
A28-1146-102-00
Operating Controls
3-23
WARNINGS
1. TO AVOID FLYING UNDER OR OVER STORMS,
FREQUENTLY SELECT MANUAL TILT TO SCAN BOTH
ABOVE AND BELOW YOUR FLIGHT LEVEL.
2. ALWAYS USE MANUAL TILT FOR WEATHER ANALYSIS.
7 RANGE
RANGE is a rotary control used to select one of six ranges (10, 25,50,
100,200,and300NM).Theseventhpositionoftherangeswitchisflight
plan mode. Selecting FPLNblanks theradar informationfrom theEFIS
display and the mode annunciation flashes if a radiating mode is
selected. The EFIS is set to a range determined by the installation.
Target alert can be used in the FPLN mode. With target alert on in the
FPLNmode,thetargetalertarmedannunciation(greenTGT)isdisplayed.
The RTA becomes active and starts searching for a hazardous target
from5to55milesand±7.5_ deadahead. Noradartargetsaredisplayed.
If a hazardous target is detected, the target alert armed annunciation
switches to the alert annunciation (amber TGT). This advisory indicates
that a hazardous target is in the aircraft’s flightpath and the WX mode
should be selected.
8 SLV (Slave)
TheSLVannunciatorisadeadfrontannunciatorthatisonlyusedindual
controller installations. With dual controllers, one controller can be
slavedtotheotherbyselectingtheRADARmodeswitchtoOFFonthat
controller, only. This slaved condition is annunciated with the SLV
annunciator.
In the slaved condition both controllers must be off before the radar
system turns off.
9 MODE
The MODE switch is a rotary switch used to select one of the following
functions:
D OFF - In this position the radar system is turned off.
D STBY - In this position the radar system is placed in standby; a
ready state, with the antenna scan stopped, the transmitter
inhibited, and the display memory erased. STBY, in green, is
displayed in the mode field.
If STBY is selected before the initial RTA warmup period is complete
(approximately 45 - 90 seconds), the flashing WAIT legend is
displayed in the mode field.